2-Methylpropyl methacrylate 2-Propenoic acid, 2-methyl-, 2-methylpropyl ester 97-86-9 Isobutyl .alpha.-methacrylate Isobutyl .alpha.-methylacrylate Isobutyl 2-methyl-2-propenoate Isobutyl methacrylate Methacrylic acid, isobutyl ester NSC18607 WLN: 1Y1 & 1OVY1 & U1